Christoph Hertsch
Switzerland (classic and modern issues)

Expert since: 1986 ·  AIEP member since: 1998
SVPS; Collectors Club, New York; American Philatelic Society

Correspondence: German, French, English, Spanish
info@briefmarken.ch
++31 3120 055

Zeughausgasse 24
3000 Bern 7
Switzerland

Personal reference collections: Access to Zumstein reference collections and library
Personal forgeries collections: Access to Zumstein reference collections of forgeries